Of the many reform movements occurring during the progressive era, which reform movement had the most positive, lasting impact on society to this day?

How did the cleveland massacre impact standard oil in 1872? standard oil hired all the laborers who were nearly killed during the cleveland massacre. standard oil became a monopoly in the cleveland oil market after the cleveland massacre. standard oil was bought out by other companies in the city after the cleveland massacre. standard oil closed down to avoid additional violence in the wake of the cleveland massacre.

What was president theodore roosevelt’s square deal

What was the goal of the united states' invasion at the bay of pigs?